He was the first of the signatories of Charles I’s Death Warrant to be executed.
Tied to a sledge he was pulled from Newgate Prison to Charing Cross. On ascending the scaffold, he refused to repent.
He was hanged with a short drop, once his body had stopped thrashing about he was cut down, and as he regained consciousness his shirt was pulled away.
The executioner then cut of his genitals, which were shown to him, then thrown into a bucket. He was held down while a red-hot metal was forced into his stomach.
While his innards were being burned in front of him, Harrison swung a punch and caught the executioner off-guard.
The embarrassed executioner lost his temper and killed Harrison.
Harrison’s head was severed, his heart cut out, and his body cut into four pieces.